Keeps the rain out so you never have to deal with “ashsoup” when you want to light your fire again! HW350 Weathering Steel (aka Corten Steel) Versions The Corten steel will be supplied pre-weathered in any external areas so you don’t have to wait 6 months or more while it goes from black steel to natural patina colour. Each burn will darken the patina. If it hasn’t burnt in a while it will start to develop a lighter patina which darkens when burnt again.
